Aeroplane or flying-machine.



IVJTNESSES:

C. P. JENKINS. AEROPLANE OR FLYING MACHINE. APPLICATION rILEp APR. 20, 1910.

Patented Apr. 7, 1914 2 SHEETS-SHEET l.

G. F. JENKINS.

AEROPLANE 0R FLYING MACHINE.

APPLICATION FILED APR 20, 1910.

' Patented Apr. 7, 121i iwwsa.

smms sumr INVENTOR.

sitar itemize FRANGIS annu ties, or wasriineroir, ms'rmor on GOLUIKBIA AEBLOPLANE QR FLYIIlWi-MAGHXNE.

Specification. ef'Letters-Eeteut.

Application sea April o, 19w. .7 same no. s one allwhomitmag concerm- Be it known that 1. CHARLES FRANCIS 3511178, citizen of the United States,--residat Washington, District of Columbia; have invented certain new and useful Improvements in Aeroplanes or. Flying-Mas: following 1s a specificschines, of phich the tion.

This invention relates to that class of machines known asacroplane's, and has for its main ohjects a construction which iseasily manageable and at the same time has supporting surfaces soi disposed 21's to ,give a greater degree ofsta oility than isfound in other formsmore common. I

According to a law of aerodynamies,.now

quite coTmnionly known as the Langleylaw, tl e power required to support a. given Weight with a given supporting surface falls ott .ranidlv'as the speed increases. Obviously it' is also ,tr ue that if the speed decreases greater supporting surface its required to carry a given W'i'ghh As starting 15 a gradual acceleration from nothing co selfsupporting speed, it is evident that a larger.

supporting surface will get up sooner than a smaller. one. other thingsheing equal. It

is also true that a more gentle landin can he made. for the samereason, with mac incs haring a supporting" surface of greater area. In all classes of mechanically, self-propelled and seliFsteering machines Zmeaning, amachine steered by agencies aboard itself) the longer the in'achine,-the farther apart the supporting members, the more reliable its stabili ty at increased speeds. This'latter-principle is also given due-Weight in the present inventionby lengthening the framing until themachine is, considerably) lon er than it is "Wide; 'llhese, then, are the principal objects .of' this invention; 71. a, (1) a dyingmachine by gusts-of Wind.

which self-sup orting at moderate speeds,

and (2) one which willbe least disturbedj Other minor objects are, the improved means for steering, both-vertically and hennontally. i

In the drawings accompanyingthese specifications Figure 1 is a side elevation of the machine. Fig. 2. a top view Fig. an end view of the n1a.chine,F ig. t an end view of the Front planes, and 5 a top yieW the driving mechanism.

ltn all the drawings like-symbols refer the front lower supporting plane; it? the to like parts, A heing the front upper and A upper and B the lower rear supporting plane; C the supporting 'hridge-bra'ced training betweenthe front and the rear planes. On this bridge-training are suit- Patented A r. 1*. time: i

ably mounted propellers 'D and D one on' each side. These are' drivenhy the motor E' also 'znounted on the training. The motor drives the propellers through the motor shaft F and the propeller shafts G andG, the motor shattcommunicating rotary mofriction heels H, land I. T he position. of these three wheels with relation to each M- and rack-sector- N through the medium of thesteering shaft-O and the handwheel' P, the latter located in convenient reach of the: operator :WhO sits-on the-bench Q. -l.0 the lever K, each side of andequi-distant from the fulcrum K are fastenedtaut at S and respectively and attac to-the rudder T hinged at U, that-is, having its this. descriptionit'is obvious that rotation of the 'steeri'ng wheel shaft 0' will change the lever K, and, of a consequenee,-the releother is governed by means of the lever K and the connecting rods L and L: -Thislever is in turn mov'ablvheld by the Worm forward end'free .tomove laterally. Fromtion of the driving Wheels, in such -a way;

tion to the'pro'peller shafts by means of the wires-R and R which ptuss throu h rings for example, as shown in Fig. 5., as to increase the speedof the left propeller-and decrease the speed of the right propeller;

which, ofitselt, would tend to turn the roa chine toward the right... This action is helped by the changed position of the rud cause the forwardend ot the rudder to swing over to the left catchingtheair. on the right of the rudder'tending to'aid in der, which, in the illustration given, Wouldturning'the machine to the right. noose wind. I This is clearly illustrated in Fig. 42,

dotted lines, indicate a position which. would I we the advancing machine .torise asl ngninsta position shown in full lines A and in which the symbols li and A, shown by loo surfaces more or less obliqnelyagainst'the A. This drawing hack of the upper part of the Whole braced frame-Work 0f the front planes is accomplished by means of the Worm V working in the rack-sector W, the worm being mounted on the shaft X. The shaft has secured thereto the steering Wheel Y, also located in convenient reach ofthe operator. The hinge Z permits of this backward and forward movement of the upper part of the forward planes. Iewould be possible to similarly hinge the rear planes, but it is believed that this is so obvious as not to need illustrating.

hat I claim, is-

1. In devices of t class described, the combination Withsuita as supporting planes, of motor devices, two propellers driven by said devices, anapproximately vertical rudder, and. means for at will varying the relative speed of the propellers and simultanemesses ously and correspondingly varying the position of the rudder.

2. In devices of the class described, the

combination with a rofiary power shaft and two transverse propeller shafts upon opposite sides of the power shaft, of variable speed gearing connecting the power shaft with each propeller shaft, a centrally piv oted lever arranged to vary the speed of the 

